New Classes and Functions in Qt 6.3

This page contains a comprehensive list of all new classes and functions introduced in Qt 6.3.

New Classes
New Member Functions
New Functions in Namespaces
New Global Functions
New Macros
New Enum Types
New Enum Values
New Properties
New Variables
New QML Types
New QML Properties
New QML Methods

New Classes

O: QOpcUaDataValue; QOpcUaHistoryData; QOpcUaHistoryReadRawRequest; QOpcUaHistoryReadResponse

W: WhenAnyResult (QtFuture)

New Member Functions

Class QAbstract3DGraph:

(since 6.3) bool hasSeries(QAbstract3DSeries *series) const

Class QBluetoothDeviceInfo:

`(since 6.3)` QMultiHash<QBluetoothUuid, QByteArray>	serviceData() const
`(since 6.3)` QByteArray	serviceData(const QBluetoothUuid &serviceId) const
`(since 6.3)` QList<QBluetoothUuid>	serviceIds() const
`(since 6.3)` bool	setServiceData(const QBluetoothUuid &serviceId, const QByteArray &data)

Class QByteArray:

(since 6.3) bool isValidUtf8() const

Class QByteArrayList:

(since 6.3) QByteArray join(QByteArrayView separator) const

Class QByteArrayMatcher:

(since 6.3) qsizetype indexIn(QByteArrayView data, qsizetype from) const

Class QByteArrayView:

`(since 6.3)` bool	isValidUtf8() const
`(since 6.3)` double	toDouble(bool *ok) const
`(since 6.3)` float	toFloat(bool *ok) const
`(since 6.3)` int	toInt(bool ok, int base*) const
`(since 6.3)` long	toLong(bool ok, int base*) const
`(since 6.3)` qlonglong	toLongLong(bool ok, int base*) const
`(since 6.3)` short	toShort(bool ok, int base*) const
`(since 6.3)` uint	toUInt(bool ok, int base*) const
`(since 6.3)` ulong	toULong(bool ok, int base*) const
`(since 6.3)` qulonglong	toULongLong(bool ok, int base*) const
`(since 6.3)` ushort	toUShort(bool ok, int base*) const
`(since 6.3)` QByteArrayView	trimmed() const

Class QCborArray:

(since 6.3) QCborArray fromJsonArray(QJsonArray &&array)

Class QCborMap:

(since 6.3) QCborMap fromJsonObject(QJsonObject &&obj)

Class QCollator:

`(since 6.3)` int	defaultCompare(QStringView s1, QStringView s2)
`(since 6.3)` QCollatorSortKey	defaultSortKey(QStringView key)

Class QCryptographicHash:

(since 6.3) QByteArrayView resultView() const

Class QDebug:

(since 6.3) QDebug operator<<(QDebug debug, const QVarLengthArray<T, P> &array)

Class QDir:

(since 6.3) bool mkdir(const QString &dirName, QFileDevice::Permissions permissions) const

Class QDirIterator:

(since 6.3) QFileInfo nextFileInfo()

Class QDoubleValidator:

(since 6.3) virtual void fixup(QString &input) const override

Class QFile:

`(since 6.3)` std::filesystem::path	filesystemSymLinkTarget() const
`(since 6.3)` std::filesystem::path	filesystemSymLinkTarget(const std::filesystem::path &fileName)
`(since 6.3)` bool	open(QIODeviceBase::OpenMode mode, QFileDevice::Permissions permissions)

Class QFontComboBox:

`(since 6.3)` std::optional<QFont>	displayFont(const QString &fontFamily) const
`(since 6.3)` QString	sampleTextForFont(const QString &fontFamily) const
`(since 6.3)` QString	sampleTextForSystem(QFontDatabase::WritingSystem writingSystem) const
`(since 6.3)` void	setDisplayFont(const QString &fontFamily, const QFont &font)
`(since 6.3)` void	setSampleTextForFont(const QString &fontFamily, const QString &sampleText)
`(since 6.3)` void	setSampleTextForSystem(QFontDatabase::WritingSystem writingSystem, const QString &sampleText)

Class QFontMetrics:

`(since 6.3)` QRect	boundingRect(const QString &text, const QTextOption &option) const
`(since 6.3)` int	horizontalAdvance(const QString &text, const QTextOption &option) const
`(since 6.3)` QRect	tightBoundingRect(const QString &text, const QTextOption &option) const

Class QFontMetricsF:

`(since 6.3)` QRectF	boundingRect(const QString &text, const QTextOption &option) const
`(since 6.3)` qreal	horizontalAdvance(const QString &text, const QTextOption &option) const
`(since 6.3)` QRectF	tightBoundingRect(const QString &text, const QTextOption &option) const

Class QInputDevice:

(since 6.3) QStringList seatNames()

Class QLatin1StringView:

(since 6.3) qsizetype lastIndexOf(QChar ch, Qt::CaseSensitivity cs) const

Class QLocalServer:

`(since 6.3)` int	listenBacklogSize() const
`(since 6.3)` void	setListenBacklogSize(int size)

Class QLocale:

`(since 6.3)` QLocale::Language	codeToLanguage(QStringView languageCode, QLocale::LanguageCodeTypes codeTypes)
`(since 6.3)` QString	languageToCode(QLocale::Language language, QLocale::LanguageCodeTypes codeTypes)

Class QEGLContext:

`(since 6.3)` int	config() const
`(since 6.3)` int	display() const

Class QNetworkInformation:

`(since 6.3)` bool	loadDefaultBackend()
`(since 6.3)` QNetworkInformation::Features	supportedFeatures() const

Class QNetworkReply:

`(since 6.3)` void	requestSent()
`(since 6.3)` void	socketStartedConnecting()

Class QObject:

(since 6.3) QList<T> findChildren(Qt::FindChildOptions options) const

Class QOpcUaClient:

(since 6.3) QOpcUaHistoryReadResponse * readHistoryData(const QOpcUaHistoryReadRawRequest &request)

Class QOpcUaLocalizedText:

(since 6.3) QDebug operator<<(QDebug debug, const QOpcUaLocalizedText &text)

Class QOpcUaNode:

(since 6.3) QOpcUaHistoryReadResponse * readHistoryRaw(const QDateTime &startTime, const QDateTime &endTime, quint32 numValues, bool returnBounds)

Class QOpcUaQualifiedName:

(since 6.3) QDebug operator<<(QDebug debug, const QOpcUaQualifiedName &name)

Class QProcessEnvironment:

(since 6.3) bool inheritsFromParent() const

Class QQuickItem:

`(since 6.3)` void	dumpItemTree() const
`(since 6.3)` void	ensurePolished()

Class QQuickRenderTarget:

`(since 6.3)` qreal	devicePixelRatio() const
`(since 6.3)` void	setDevicePixelRatio(qreal ratio)

Class QRegularExpressionMatch:

`(since 6.3)` bool	hasCaptured(QAnyStringView name) const
`(since 6.3)` bool	hasCaptured(int nth) const

Class QSemaphore:

`(since 6.3)` bool	tryAcquire(int n, std::chrono::duration<Rep, Period> timeout)
`(since 6.3)` bool	try_acquire()
`(since 6.3)` bool	try_acquire_for(const std::chrono::duration<Rep, Period> &timeout)
`(since 6.3)` bool	try_acquire_until(const std::chrono::time_point<Clock, Duration> &tp)

Class QString:

(since 6.3) qsizetype lastIndexOf(QChar ch, Qt::CaseSensitivity cs) const

Class QStringView:

(since 6.3) qsizetype lastIndexOf(QChar c, Qt::CaseSensitivity cs) const

Class QTableWidgetSelectionRange:

`(since 6.3)` bool	operator!=(const QTableWidgetSelectionRange &lhs, const QTableWidgetSelectionRange &rhs)
`(since 6.3)` bool	operator==(const QTableWidgetSelectionRange &lhs, const QTableWidgetSelectionRange &rhs)

Class QTcpServer:

`(since 6.3)` int	listenBacklogSize() const
`(since 6.3)` void	setListenBacklogSize(int size)

Class QThreadPool:

`(since 6.3)` void	startOnReservedThread(QRunnable *runnable)
`(since 6.3)` void	startOnReservedThread(Callable &&callableToRun)

Class QUrl:

`(since 6.3)` QString	fromAce(const QByteArray &domain, QUrl::AceProcessingOptions options)
`(since 6.3)` QByteArray	toAce(const QString &domain, QUrl::AceProcessingOptions options)

Class QUtf8StringView:

(since 6.3) bool isValidUtf8() const

Class QVarLengthArray:

`(since 6.3)` QVarLengthArray<T, Prealloc>::iterator	emplace(QVarLengthArray<T, Prealloc>::const_iterator pos, Args &&... args)
`(since 6.3)` T &	emplace_back(Args &&... args)

Class QWidget:

`(since 6.3)` QAction *	addAction(const QString &text)
`(since 6.3)` QAction *	addAction(const QIcon &icon, const QString &text)
`(since 6.3)` QAction *	addAction(const QString &text, const QKeySequence &shortcut)
`(since 6.3)` QAction *	addAction(const QIcon &icon, const QString &text, const QKeySequence &shortcut)
`(since 6.3)` QAction *	addAction(const QString &text, Args &&... args)
`(since 6.3)` QAction *	addAction(const QIcon &icon, const QString &text, Args &&... args)
`(since 6.3)` QAction *	addAction(const QString &text, const QKeySequence &shortcut, Args &&... args)
`(since 6.3)` QAction *	addAction(const QIcon &icon, const QString &text, const QKeySequence &shortcut, Args &&... args)
`(since 6.3)` QAction *	addAction(const QString &text, const QObject *receiver, const char *member, Qt::ConnectionType type)
`(since 6.3)` QAction *	addAction(const QIcon &icon, const QString &text, const QObject *receiver, const char *member, Qt::ConnectionType type)
`(since 6.3)` QAction *	addAction(const QString &text, const QKeySequence &shortcut, const QObject *receiver, const char *member, Qt::ConnectionType type)
`(since 6.3)` QAction *	addAction(const QIcon &icon, const QString &text, const QKeySequence &shortcut, const QObject *receiver, const char *member, Qt::ConnectionType type)

New Functions in Namespaces

`(since 6.3)` void	failOnWarning(const char *message)
`(since 6.3)` void	failOnWarning(const QRegularExpression &messagePattern)
`(since 6.3)` QFuture<OutputSequence>	whenAll(InputIt first, InputIt last)
`(since 6.3)` QFuture<OutputSequence>	whenAll(Futures &&... futures)
`(since 6.3)` QFuture<QtFuture::WhenAnyResult<T>>	whenAny(InputIt first, InputIt last)
`(since 6.3)` QFuture<std::variant<std::decay_t<Futures>...>>	whenAny(Futures &&... futures)

New Global Functions

(since 6.3) const char * qWebEngineChromiumSecurityPatchVersion()

New Macros

`(since 6.3)`	QT_TRID_N_NOOP(id)
`(since 6.3)`	QVERIFY_THROWS_EXCEPTION(exceptiontype, ...)
`(since 6.3)`	QVERIFY_THROWS_NO_EXCEPTION(...)
`(since 6.3)`	Q_APPLICATION_STATIC(Type, VariableName, ...)
`(since 6.3)`	Q_GADGET_EXPORT(EXPORT_MACRO)

New Enum Types

`(since 6.3)` enum class	TransportMedium { Unknown, Ethernet, Cellular, WiFi, Bluetooth }
`(since 6.3)` enum	Initialization { InheritFromParent }
`(since 6.3)` enum	AceProcessingOption { IgnoreIDNWhitelist, AceTransitionalProcessing }

New Enum Values

enum value	Language::Kaingang
enum value	Language::Nheengatu
enum value	PixelMetric::PM_LineEditIconMargin
enum value	Script::Script_CyproMinoan
enum value	Script::Script_NagMundari
enum value	Script::Script_OldUyghur
enum value	Script::Script_Tangsa
enum value	Script::Script_Toto
enum value	Script::Script_Vithkuqi
enum value	StandardPixmap::SP_TabCloseButton
enum value	StyleHint::SH_SpinBox_SelectOnStep
enum value	UnicodeVersion::Unicode_14_0

New Properties

(since 6.3) barSeriesMargin : const
(since 6.3) rowColors : const
(since 6.3) autoScaleY : const
(since 6.3) maxYValue : const

(since 6.3) minYValue : const
(since 6.3) isMetered : const
(since 6.3) transportMedium : const
(since 6.3) wireframeColor : const

New Variables

`(since 6.3)`	MacOSMonterey
`(since 6.3)`	Windows10_1809
`(since 6.3)`	Windows10_1903
`(since 6.3)`	Windows10_1909
`(since 6.3)`	Windows10_2004
`(since 6.3)`	Windows10_20H2
`(since 6.3)`	Windows10_21H1
`(since 6.3)`	Windows10_21H2
`(since 6.3)`	Windows11

New QML Types

D: DynamicBurst3D

F: FolderDialog

M: MessageDialog

P: ParticleCustomShape3D

T: TreeView; TreeViewDelegate

New QML Properties

QML Type Bar3DSeries:

(since 6.3) rowColors : list<ThemeColor>

QML Type Bars3D:

(since 6.3) barSeriesMargin : size

QML Type FileInstancing:

(since 6.3) instanceCount : int

QML Type HeightMapSurfaceDataProxy:

`(since 6.3)`	autoScaleY : real
`(since 6.3)`	maxYValue : real
`(since 6.3)`	minYValue : real

QML Type HoverHandler:

(since 6.3) blocking : bool

QML Type InstanceList:

(since 6.3) instanceCount : int

QML Type ParticleSystem3DLogging:

(since 6.3) timeDeviation : real

QML Type SpriteParticle3D:

`(since 6.3)`	lights : list<Light>
`(since 6.3)`	offsetX : real
`(since 6.3)`	offsetY : real

QML Type Surface3DSeries:

(since 6.3) wireframeColor : color

QML Type TextMetrics:

(since 6.3) renderType : enumeration

QML Type WheelHandler:

(since 6.3) blocking : bool

New QML Methods

QML Type AbstractGraph3D:

(since 6.3) bool hasSeries(Abstract3DSeries series)

QML Type Instancing:

`(since 6.3)` color	instanceColor(int index)
`(since 6.3)` vector3d	instanceCustomData(int index)
`(since 6.3)` vector3d	instancePosition(int index)
`(since 6.3)` quaternion	instanceRotation(int index)
`(since 6.3)` vector3d	instanceScale(int index)

QML Type Item:

(since 6.3) dumpItemTree()

QML Type TestCase:

(since 6.3) failOnWarning(message)